DNS changer by Blokada

Blokada DNS is a free, easy to use tool to make it easy and fast to switch between DNS (Domain Name System) servers to provide you trustworthy, secure and reliable internet connection. It protects you against DNS spoofing, helps you to access websites which are blocked by your ISP.

The application is ad-free and it's main project is also free and open source, you can find it on blokada.org website.